That Time It Rained for Two Million Years | Eons WKNO Published October 5, 2023 at 5:00 AM CDT Facebook Twitter LinkedIn Email At the beginning of the Triassic Period, with the continents locked together from pole-to-pole in the supercontinent of Pangea, the world is hot, flat, and very, very dry. But then 234 million years ago, the climate suddenly changed for the wetter.